Heavy Weight Drill Pipe HWDP 3-1/2 inch Alloy Steel
3-1/2 inch (88.9 mm) OD heavy weight drill pipe (HWDP) made from seamless alloy steel tubing with 7.8 mm wall thickness for transition zones in drilling strings. Features upset ends for premium tool joint connections. Falls under HTS 7304.23.6030 as seamless alloy steel drill pipe with specified dimensions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as finished pipe with welded tool joints
Drill pipe with welded fittings classifies as other welded steel tubes in Chapter 73
If wall thickness exceeds 9.5 mm
Thicker wall drill pipe >9.5mm falls under 7304.29 statistical breakouts
If for gas drilling applications with integrated gas-tight seals
Specialized gas drill pipe may classify as gas compressor parts
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include upset end dimensions and connection specifications in commercial invoice
• Ensure no plastic coating or lining; coated pipe may require different classification
• Maintain traceability documentation from steel mill to finished pipe for Customs verification
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